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{ "unit": "days", "code": "days_observed", "n": 25, "window": "all", "description_en": "Distinct dates with usable observations within this window", "reason": null, "data_status": "calculated", "value": "25" }, { "unit": "fraction", "code": "share_measured", "n": 25, "window": "all", "description_en": "Share of checks in this window that recorded a value", "reason": null, "data_status": "calculated", "value": "1" }, { "unit": "percent", "code": "drift_percent", "n": 25, "window": "all", "description_en": "Percentage change from the first usable value to the last within this window", "reason": null, "data_status": "calculated", "value": "0" }, { "unit": "count", "code": "changes_in_window", "n": 25, "window": "all", "description_en": "Detected fact changes whose later observation falls within this window", "reason": null, "data_status": "calculated", "value": "0" }, { "unit": "usd_per_1m_tokens", "currency": "USD", "code": "latest_value", "n": 25, "window": "all", "description_en": "Latest usable measured value in this window", "reason": null, "data_status": "measured", "value": "2" }, { "unit": "fraction", "code": "stability", "n": 25, "window": "all", "description_en": "Fraction of adjacent usable observation pairs with unchanged values within this window", "reason": null, "data_status": "calculated", "value": "1" } ], "latest": { "evidence": { "bytes": 829400, "http_status": 200, "url": "https://openrouter.ai/api/v1/models" }, "extra": {}, "measured": { "unit": "usd_per_1m_tokens", "currency": "USD", "value": "2" }, "data_class": "public", "method_version": "1", "object_id": "ai-models:openai-gpt-4.1", "claim": { "date": "2026-11-09", "unit": "usd_per_token", "currency": "USD", "source": { "quote": "\"prompt\":\"0.000002\"", "url": "https://openrouter.ai/api/v1/models" }, "text": null, "value": "0.000002" }, "section": "ai-models", "section_version": "1", "repeats": 1, "reason": null, "region": "US", "region_name": "United States", "schema": "measurement", "schema_version": "1", "data_status": "measured", "question": "How much does OpenAI GPT-4.1 cost per 1M input tokens on OpenRouter?", "time": "2026-11-09T03:43:34.334Z", "measurement_id": "d098cc005d5939d0" }, "quarantine": { "active": false, "held": [], "main_answer": false, "rule": "A very large price move is shown only after checks on two different dates return the same price; until then the page shows the previous value." }, "raw_journal": [], "generated_at": "2026-11-09T04:41:48.819Z", "schema": "object_slice", "schema_version": "1" }